O2 Alarm - Siemens LMV5 Series Technical Instructions

LMV Series
LEGEND - Password Access: (U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function
Menu Path Parameter
Params & Display>
O2Contr/Alarm> OptgMode (S)
Gas/Oil Settings
Params & Display>
O2Contr/Alarm> O2 Control (S)
Gas/Oil Settings
O2 Alarm (S)
Params & Display>
Time O2 Alarm (O)
O2Contr/Alarm>
Gas/Oil Settings>

O2 Alarm

Type O2 MaxValue (O)
O2 MaxValue (S)
SCC Inc.
Default Range
Four settings are available for each fuel:
1) man deact - O2 trim controller AND O2 monitor are de-activated. Burner will run on ratio
control curve.
2) O2 Limiter - Only the O2 Alarm is activated. Any O2 fault, including low O2 levels in the
stack, will cause a burner lockout. O2 Alarm curve must be input for this function.
man deact
3) O2 Control - O2 trim controller and O2 Alarm are activated. Any O2 fault will cause a
O2 Limiter
man deact burner shutdown. O2 Alarm curve and O2 setpoint curve must be input for this function.
O2 Control
4) ConAutoDeac - configured to automatically deactivate the O2 trim controller if any O2
conAutoDeac
fault occurs. Burner runs on ratio curve when O2 control auto deactivates.
NOTE: "auto deact" will appear when the O2 control deactivates itself, due to an operating
fault or component malfunction. If the control goes into auto deact, choose O2 Limiter, O2
Control, or ConAutoDeac to re-activate. This can also be reactivated under: Operation >
O2Ctrl activate .
This is where the O2 ratio control and the O2 control curves are input. An O2 ratio contol
Not Set Points 2-15 point and O2 control point must be set for every point on the position control curve except
for point 1. See Section 6 for more detail.
This is where the low O2 alarm curve is input. A low O2 alarm point must be set for every
point on the position control curve. The position control curves (fuel air ratio curves) must be
Not Set Points 1-15
set before this curve is entered. Points can be set by typing in an O2 value or by probing each
point. See Section 6 for more detail.
The maximum amount of time the measured %O2 is permitted to be higher than O2
3s 1-60s MaxValue or lower than the O2 Alarm . Essentially a timer to give the LMV5 time to correct
an O2 excursion. Set to the highest value that is safe for the application.
Either the O2 ratio control curve (O2MaxCurve) or a single value (defined by O2MaxValue )
O2Max O2MaxValue
can be used to define the maximum allowable %O2 for a given burner. If set to
Value O2MaxCurve
"O2MaxValue", the value (defined below) is used for all firing rates.
Sets the maximum allowable %O2 for a given burner if parameter Type O2 MaxValue (see
15% 0-15%
above) is set to "O2MaxValue".
Page 22
HOME
Description
P - LIST
Technical Instructions
LV5-1000
LMV
x x
x x
x x
x x
x
x x
Section 3